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PC PSU to laboratory PSU
Why obsess over the LM317? Not an appropriate choice here.

My cell rises to a temperature and cu ...
19-1-2008 at 18:40
by: 12AX7
PC PSU to laboratory PSU
Oh, that's on my page 14 (most recent). Just what posts/page settings does everyone think they use ...
19-1-2008 at 14:07
by: 12AX7
PC PSU to laboratory PSU
Exactly what circuit are we talking about?
19-1-2008 at 11:54
by: 12AX7
Multilayer Metal Oxide / Titanium Anodes for Chlorate/Perchlorate
[quote][i]Originally posted by Rosco Bodine[/i]
by emulating a membrane cell with a slime
layer on ...
19-1-2008 at 05:41
by: 12AX7
PC PSU to laboratory PSU
Circuits I've seen add the voltages together and regulate them jointly.

What I mean by the CT is, ...
18-1-2008 at 10:31
by: 12AX7
Anyone here familiar with electroforming?
Hell, I'd intentionally touch it, just to make it release better. With titanium that may not be a c ...
18-1-2008 at 04:52
by: 12AX7
Anyone here familiar with electroforming?
I got this from a friend:

Nickel plating levelers, first degree: Saccharin, aromatic sulfonic aci ...
17-1-2008 at 19:51
by: 12AX7
PC PSU to laboratory PSU
[quote][i]Originally posted by dann2[/i]
@ 12AX7.Will the constant current moule of the circuit tha ...
17-1-2008 at 19:42
by: 12AX7
More on PbO2 electrodes
If it's "loaded with acid", the chlorate is present as HClO3 (pH < 1 or so) and decomposing to Cl ...
17-1-2008 at 16:39
by: 12AX7
PC PSU to laboratory PSU
The current limiting is usually done with a current transformer at the output transistors. So, you ...
17-1-2008 at 16:36
by: 12AX7
Valorizing the Glycerol from Biodiesel Production
Sodium carbonate?

Typical carboxylic acid pKa ~ 5, CO3(2-) ~ 10...

Running through a bed of so ...
17-1-2008 at 13:07
by: 12AX7
Exotic thermites & analogs
There's enough Al to burn the S, obviously. (SiS and SiS2 are known, but not likely, and definetly ...
17-1-2008 at 13:06
by: 12AX7
copper(I)chloride
Do not heat it, you will only evaporate noxious copper fumes. CuCl2 has a high vapor pressure, and ...
17-1-2008 at 12:02
by: 12AX7
Cleaning TiO2 out of glassware
The peroxy-titanium complex decomposes and precipitates in basic solution (and on drying, what a sha ...
16-1-2008 at 15:10
by: 12AX7
Precious Metals Reclamation Thread (Photo Intensive!!)
[quote][i]Originally posted by 12AX7[/i]
Awesome.

I, too, have a golden colored solution, water ...
16-1-2008 at 14:27
by: 12AX7
PC PSU to laboratory PSU
So why does it have two ICs and numerous resistors, when mine has less? And "per module" he says!
...
16-1-2008 at 10:50
by: 12AX7
High Temperature Argon Filled Arc Furnace
Cool!

Note that Ti forms carbides (and nitrides, and oxides, and just about everything else under ...
15-1-2008 at 20:33
by: 12AX7
Cleaning TiO2 out of glassware
Oxalic acid or HCl may produce results.

Tim
15-1-2008 at 16:29
by: 12AX7
More on PbO2 electrodes
Isn't plumbate more soluble and acidic than plumbite? Why would PbO2 deposit in such a bath?

Tim
14-1-2008 at 17:18
by: 12AX7
The limits of science
Hmm, relativisim is invoked willy-nilly in a lot of quantum calculations. For instance, the energy ...
14-1-2008 at 17:15
by: 12AX7
H2 adsorption ability of Ru, Pt, Ni metal powder
Ni and Al form several intermetallic compounds. They also do so exothermically, so care must be use ...
14-1-2008 at 17:12
by: 12AX7
Anyone here familiar with electroforming?
Useless without a few drops of thiourea solution (Tarn-X contains it).

The concentration and all ...
14-1-2008 at 11:14
by: 12AX7
Baking soda no longer OTC? Laugh? Cry? You decide
John,

Please keep your inane ramblings in Whimsy.

Tim
13-1-2008 at 15:25
by: 12AX7
sulfur burner post mortem
Ummmm go slower? :P
13-1-2008 at 05:32
by: 12AX7
Plating Titanium
Without the molten NaOH cleaning, especially on well passivated (annealed, etc.) stock, the HF only ...
12-1-2008 at 19:14
by: 12AX7
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